package com.zpark.wxshop.config;


import org.springframework.boot.autoconfigure.cache.CacheProperties;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheConfiguration;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.*;

import java.net.UnknownHostException;

//固定模板，拿去直接使用
//仅仅是使用与redis的配置，不参与cache的配置
@Configuration
@EnableConfigurationProperties(CacheProperties.class)//开启属性绑定配置的功能
public class RedisConfig {

    @Bean
    public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory redisConnectionFactory) throws UnknownHostException {
        // 将template 泛型设置为 <String, Object>
        RedisTemplate<String, Object> template = new RedisTemplate();
        // 连接工厂，不必修改
        template.setConnectionFactory(redisConnectionFactory);
        /*
         * 序列化设置
         */
        // key、hash的key 采用 String序列化方式
        template.setKeySerializer(RedisSerializer.string());
        template.setHashKeySerializer(RedisSerializer.string());
        // value、hash的value 采用 Jackson 序列化方式
        template.setValueSerializer(RedisSerializer.json());
        template.setHashValueSerializer(RedisSerializer.json());
        template.afterPropertiesSet();

        return template;
    }


    @Bean
    RedisCacheConfiguration redisCacheConfiguration(CacheProperties cacheProperties) {
        RedisCacheConfiguration config = RedisCacheConfiguration.defaultCacheConfig();
//        config=config.entryTtl();
        config = config.serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(new StringRedisSerializer()));
        /**
         * GenericFastJsonRedisSerializer   fastjson家族的
         * GenericJackson2JsonRedisSerializer   spring自带的 package org.springframework.data.redis.serializer;
         */
        //指定序列化-Jackson
        config = config.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new GenericJackson2JsonRedisSerializer()));
        //指定序列化-fastjson
        //config= config.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(new GenericFastJsonRedisSerializer()));
        //从所以配置中取出redis的配置
        CacheProperties.Redis redisProperties = cacheProperties.getRedis();
        //将配置文件中所有的配置都生效（之间从源码里面拷 RedisCacheConfiguration）
        if (redisProperties.getTimeToLive() != null) {
            config = config.entryTtl(redisProperties.getTimeToLive());
        }
        if (redisProperties.getKeyPrefix() != null) {
            config = config.prefixKeysWith(redisProperties.getKeyPrefix());
        }
        if (!redisProperties.isCacheNullValues()) {
            config = config.disableCachingNullValues();
        }
        if (!redisProperties.isUseKeyPrefix()) {
            config = config.disableKeyPrefix();
        }
        return config;
    }
}







